Performing configuration checks

    - default address-model    : 32-bit (cached)
    - default architecture     : x86 (cached)

Component configuration:

    - atomic                   : not building
    - chrono                   : not building
    - container                : not building
    - context                  : not building
    - contract                 : not building
    - coroutine                : not building
    - date_time                : not building
    - exception                : not building
    - fiber                    : not building
    - filesystem               : building
    - graph                    : not building
    - graph_parallel           : not building
    - headers                  : not building
    - iostreams                : not building
    - locale                   : not building
    - log                      : not building
    - math                     : not building
    - mpi                      : not building
    - nowide                   : not building
    - program_options          : not building
    - python                   : not building
    - random                   : not building
    - regex                    : not building
    - serialization            : not building
    - stacktrace               : not building
    - system                   : not building
    - test                     : not building
    - thread                   : not building
    - timer                    : not building
    - type_erasure             : not building
    - wave                     : not building

...patience...
...found 680 targets...
...updating 107 targets...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\exception.obj
exception.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\exception.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\exception.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\exception.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\unique_path.obj
unique_path.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\unique_path.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\unique_path.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\unique_path.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\codecvt_error_category.obj
codecvt_error_category.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\codecvt_error_category.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\codecvt_error_category.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\codecvt_error_category.obj...
boost-install.generate-cmake-config- bin.v2\libs\filesystem\build\stage\boost_filesystem-config.cmake
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\directory.obj
directory.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\directory.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\directory.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\directory.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\operations.obj
operations.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\operations.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\operations.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\operations.obj...
boost-install.generate-cmake-config-version- bin.v2\libs\filesystem\build\stage\boost_filesystem-config-version.cmake
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\path.obj
path.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\path.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\path.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\path.obj...
boost-install.generate-cmake-config-version- bin.v2\tools\boost_install\BoostConfigVersion.cmake
boost-install.generate-cmake-config- bin.v2\libs\headers\build\stage\boost_headers-config.cmake
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\path_traits.obj
path_traits.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\path_traits.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\path_traits.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\path_traits.obj...
common.copy E:\git\boost\address-model-32\lib\cmake\BoostDetectToolset-1.73.0.cmake
E:\git\boost\tools\boost_install\BoostDetectToolset.cmake
        1 Datei(en) kopiert.
boost-install.generate-cmake-config-version- bin.v2\libs\headers\build\stage\boost_headers-config-version.cmake
common.copy E:\git\boost\address-model-32\lib\cmake\boost_filesystem-1.73.0\boost_filesystem-config.cmake
bin.v2\libs\filesystem\build\stage\boost_filesystem-config.cmake
        1 Datei(en) kopiert.
common.copy E:\git\boost\address-model-32\lib\cmake\boost_headers-1.73.0\boost_headers-config.cmake
bin.v2\libs\headers\build\stage\boost_headers-config.cmake
        1 Datei(en) kopiert.
common.copy E:\git\boost\address-model-32\lib\cmake\boost_headers-1.73.0\boost_headers-config-version.cmake
bin.v2\libs\headers\build\stage\boost_headers-config-version.cmake
        1 Datei(en) kopiert.
common.copy E:\git\boost\address-model-32\lib\cmake\boost_filesystem-1.73.0\boost_filesystem-config-version.cmake
bin.v2\libs\filesystem\build\stage\boost_filesystem-config-version.cmake
        1 Datei(en) kopiert.
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\portability.obj
portability.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\portability.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\portability.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\portability.obj...
common.copy E:\git\boost\address-model-32\lib\cmake\Boost-1.73.0\BoostConfigVersion.cmake
bin.v2\tools\boost_install\BoostConfigVersion.cmake
        1 Datei(en) kopiert.
common.copy E:\git\boost\address-model-32\lib\cmake\Boost-1.73.0\BoostConfig.cmake
E:\git\boost\tools\boost_install\BoostConfig.cmake
        1 Datei(en) kopiert.
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\utf8_codecvt_facet.obj
utf8_codecvt_facet.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\utf8_codecvt_facet.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\utf8_codecvt_facet.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\utf8_codecvt_facet.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\windows_file_codecvt.obj
windows_file_codecvt.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\windows_file_codecvt.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\windows_file_codecvt.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi\windows_file_codecvt.obj...
...skipped <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi>boost_filesystem-iw-mt-gd-x32-1_73.lib for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi>codecvt_error_category.obj...
...skipped <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi>boost_filesystem-iw-mt-gd-x32-1_73.dll for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi>codecvt_error_category.obj...
...skipped <pE:\git\boost\address-model-32\lib>boost_filesystem-iw-mt-gd-x32-1_73.lib for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi>boost_filesystem-iw-mt-gd-x32-1_73.lib...
...skipped <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi>libboost_filesystem-variant-iw-mt-gd-x32-1_73-shared.cmake for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi>boost_filesystem-iw-mt-gd-x32-1_73.lib...
...skipped <pE:\git\boost\address-model-32\lib\cmake\boost_filesystem-1.73.0>libboost_filesystem-variant-iw-mt-gd-x32-1_73-shared.cmake for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi>libboost_filesystem-variant-iw-mt-gd-x32-1_73-shared.cmake...
...skipped <pE:\git\boost\address-model-32\lib>boost_filesystem-iw-mt-gd-x32-1_73.dll for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\threading-multi>boost_filesystem-iw-mt-gd-x32-1_73.dll...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\exception.obj
exception.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\exception.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\exception.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\exception.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\codecvt_error_category.obj
codecvt_error_category.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\codecvt_error_category.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\codecvt_error_category.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\codecvt_error_category.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\directory.obj
directory.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\directory.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\directory.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\directory.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\operations.obj
operations.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\operations.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\operations.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\operations.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\path_traits.obj
path_traits.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\path_traits.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\path_traits.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\path_traits.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\path.obj
path.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\path.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\path.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\path.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\portability.obj
portability.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\portability.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\portability.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\portability.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\unique_path.obj
unique_path.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\unique_path.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\unique_path.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\unique_path.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\utf8_codecvt_facet.obj
utf8_codecvt_facet.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\utf8_codecvt_facet.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\utf8_codecvt_facet.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\utf8_codecvt_facet.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\windows_file_codecvt.obj
windows_file_codecvt.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\windows_file_codecvt.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\windows_file_codecvt.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi\windows_file_codecvt.obj...
...skipped <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi>boost_filesystem-iw-mt-x32-1_73.lib for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi>codecvt_error_category.obj...
...skipped <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi>boost_filesystem-iw-mt-x32-1_73.dll for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi>codecvt_error_category.obj...
...skipped <pE:\git\boost\address-model-32\lib>boost_filesystem-iw-mt-x32-1_73.lib for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi>boost_filesystem-iw-mt-x32-1_73.lib...
...skipped <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi>libboost_filesystem-variant-iw-mt-x32-1_73-shared.cmake for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi>boost_filesystem-iw-mt-x32-1_73.lib...
...skipped <pE:\git\boost\address-model-32\lib\cmake\boost_filesystem-1.73.0>libboost_filesystem-variant-iw-mt-x32-1_73-shared.cmake for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi>libboost_filesystem-variant-iw-mt-x32-1_73-shared.cmake...
...skipped <pE:\git\boost\address-model-32\lib>boost_filesystem-iw-mt-x32-1_73.dll for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\threading-multi>boost_filesystem-iw-mt-x32-1_73.dll...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\exception.obj
exception.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\exception.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\exception.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\exception.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\codecvt_error_category.obj
codecvt_error_category.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\codecvt_error_category.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\codecvt_error_category.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\codecvt_error_category.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\directory.obj
directory.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\directory.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\directory.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\directory.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\operations.obj
operations.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\operations.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\operations.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\operations.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\path.obj
path.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\path.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\path.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\path.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\path_traits.obj
path_traits.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\path_traits.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\path_traits.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\path_traits.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\portability.obj
portability.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\portability.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\portability.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\portability.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\unique_path.obj
unique_path.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\unique_path.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\unique_path.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\unique_path.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\utf8_codecvt_facet.obj
utf8_codecvt_facet.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\utf8_codecvt_facet.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\utf8_codecvt_facet.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\utf8_codecvt_facet.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\exception.obj
exception.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\exception.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\exception.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\exception.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\windows_file_codecvt.obj
windows_file_codecvt.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\windows_file_codecvt.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\windows_file_codecvt.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi\windows_file_codecvt.obj...
...skipped <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi>libboost_filesystem-iw-mt-gd-x32-1_73.lib for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi>codecvt_error_category.obj...
...skipped <pE:\git\boost\address-model-32\lib>libboost_filesystem-iw-mt-gd-x32-1_73.lib for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi>libboost_filesystem-iw-mt-gd-x32-1_73.lib...
...skipped <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi>libboost_filesystem-variant-iw-mt-gd-x32-1_73-static.cmake for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi>libboost_filesystem-iw-mt-gd-x32-1_73.lib...
...skipped <pE:\git\boost\address-model-32\lib\cmake\boost_filesystem-1.73.0>libboost_filesystem-variant-iw-mt-gd-x32-1_73-static.cmake for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\threading-multi>libboost_filesystem-variant-iw-mt-gd-x32-1_73-static.cmake...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\codecvt_error_category.obj
codecvt_error_category.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\codecvt_error_category.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\codecvt_error_category.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\codecvt_error_category.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\directory.obj
directory.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\directory.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\directory.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\directory.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\operations.obj
operations.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\operations.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\operations.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\operations.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\path.obj
path.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\path.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\path.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\path.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\portability.obj
portability.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\portability.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\portability.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\portability.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\path_traits.obj
path_traits.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\path_traits.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\path_traits.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\path_traits.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\unique_path.obj
unique_path.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\unique_path.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\unique_path.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\unique_path.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\utf8_codecvt_facet.obj
utf8_codecvt_facet.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\utf8_codecvt_facet.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\utf8_codecvt_facet.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\utf8_codecvt_facet.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\windows_file_codecvt.obj
windows_file_codecvt.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\windows_file_codecvt.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\windows_file_codecvt.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi\windows_file_codecvt.obj...
...skipped <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi>libboost_filesystem-iw-mt-x32-1_73.lib for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi>codecvt_error_category.obj...
...skipped <pE:\git\boost\address-model-32\lib>libboost_filesystem-iw-mt-x32-1_73.lib for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi>libboost_filesystem-iw-mt-x32-1_73.lib...
...skipped <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi>libboost_filesystem-variant-iw-mt-x32-1_73-static.cmake for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi>libboost_filesystem-iw-mt-x32-1_73.lib...
...skipped <pE:\git\boost\address-model-32\lib\cmake\boost_filesystem-1.73.0>libboost_filesystem-variant-iw-mt-x32-1_73-static.cmake for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\threading-multi>libboost_filesystem-variant-iw-mt-x32-1_73-static.cmake...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\codecvt_error_category.obj
codecvt_error_category.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\codecvt_error_category.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\codecvt_error_category.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\codecvt_error_category.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\exception.obj
exception.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\exception.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\exception.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\exception.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\directory.obj
directory.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\directory.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\directory.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\directory.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\operations.obj
operations.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\operations.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\operations.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\operations.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\path_traits.obj
path_traits.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\path_traits.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\path_traits.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\path_traits.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\path.obj
path.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\path.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\path.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\path.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\unique_path.obj
unique_path.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\unique_path.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\unique_path.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\unique_path.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\portability.obj
portability.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\portability.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\portability.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\portability.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\utf8_codecvt_facet.obj
utf8_codecvt_facet.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\utf8_codecvt_facet.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\utf8_codecvt_facet.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\utf8_codecvt_facet.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\windows_file_codecvt.obj
windows_file_codecvt.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\windows_file_codecvt.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\windows_file_codecvt.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi\windows_file_codecvt.obj...
...skipped <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi>libboost_filesystem-iw-mt-sgd-x32-1_73.lib for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi>codecvt_error_category.obj...
...skipped <pE:\git\boost\address-model-32\lib>libboost_filesystem-iw-mt-sgd-x32-1_73.lib for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi>libboost_filesystem-iw-mt-sgd-x32-1_73.lib...
...skipped <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi>libboost_filesystem-variant-iw-mt-sgd-x32-1_73-static.cmake for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi>libboost_filesystem-iw-mt-sgd-x32-1_73.lib...
...skipped <pE:\git\boost\address-model-32\lib\cmake\boost_filesystem-1.73.0>libboost_filesystem-variant-iw-mt-sgd-x32-1_73-static.cmake for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\debug\link-static\runtime-link-static\threading-multi>libboost_filesystem-variant-iw-mt-sgd-x32-1_73-static.cmake...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\exception.obj
exception.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\exception.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\exception.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\exception.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\codecvt_error_category.obj
codecvt_error_category.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\codecvt_error_category.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\codecvt_error_category.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\codecvt_error_category.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\directory.obj
directory.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\directory.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\directory.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\directory.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\operations.obj
operations.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\operations.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\operations.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\operations.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\path_traits.obj
path_traits.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\path_traits.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\path_traits.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\path_traits.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\path.obj
path.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\path.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\path.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\path.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\unique_path.obj
unique_path.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\unique_path.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\unique_path.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\unique_path.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\portability.obj
portability.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\portability.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\portability.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\portability.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\utf8_codecvt_facet.obj
utf8_codecvt_facet.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\utf8_codecvt_facet.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\utf8_codecvt_facet.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\utf8_codecvt_facet.obj...
compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\windows_file_codecvt.obj
windows_file_codecvt.cpp
C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(96): error: expected an identifier
          !_Is_implicitly_default_constructible<_Uty1>::value || !_Is_implicitly_default_constructible<_Uty2>::value)
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: not a valid member class or function template declaration
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(95): error: "explicit" is not allowed
      constexpr explicit(
      ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(97): error: expected a ";"
          pair() noexcept(
          ^

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.25.28610\include\utility(177): error: expected an identifier
      constexpr explicit(!is_convertible_v<const _Other1&, _Ty1> || !is_convertible_v<const _Other2&, _Ty2>)
                         ^

compilation aborted for libs\filesystem\src\windows_file_codecvt.cpp (code 4)

    call "bin.v2\standalone\msvc\intel\msvc-setup.bat" ia32 vs2019 >nul
 icl @"bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\windows_file_codecvt.obj.rsp" 

...failed compile-c-c++ bin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi\windows_file_codecvt.obj...
...skipped <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi>libboost_filesystem-iw-mt-s-x32-1_73.lib for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi>codecvt_error_category.obj...
...skipped <pE:\git\boost\address-model-32\lib>libboost_filesystem-iw-mt-s-x32-1_73.lib for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi>libboost_filesystem-iw-mt-s-x32-1_73.lib...
...skipped <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi>libboost_filesystem-variant-iw-mt-s-x32-1_73-static.cmake for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi>libboost_filesystem-iw-mt-s-x32-1_73.lib...
...skipped <pE:\git\boost\address-model-32\lib\cmake\boost_filesystem-1.73.0>libboost_filesystem-variant-iw-mt-s-x32-1_73-static.cmake for lack of <pbin.v2\libs\filesystem\build\intel-vc14.2-win-19.1\release\link-static\runtime-link-static\threading-multi>libboost_filesystem-variant-iw-mt-s-x32-1_73-static.cmake...
...failed updating 60 targets...
...skipped 28 targets...
...updated 18 targets...
